Formaldehyde → Melamine formaldehyde

HRID 2107522Notes

Reaction equation

HRID 2107522 reaction equation
[N:1]1[C:8]([NH2:9])=[N:7][C:5]([NH2:6])=[N:4][C:2]=1[NH2:3].[CH2:10]=[O:11].[OH-].[Na+]>O>[CH2:10]=[O:11].[N:1]1[C:8]([NH2:9])=[N:7][C:5]([NH2:6])=[N:4][C:2]=1[NH2:3]

Participants

5

Reactant 3

HCID 712FormaldehydeHCID 7955MelamineHCID 14798Sodium Hydroxide

Product 1

HCID 93374Melamine formaldehyde

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Separately, 11 parts of melamine, 21.2 parts of 37% aqueous formaldehyde solution and 28.2 parts of water were mixed and to the mixture was added sodium hydroxide to adjust pH to 9, followed by heating the mixture to cause dissolution to obtain an aqueous solution of melamine-formaldehyde pre-condensate. This aqueous solution was added to said emulsion and stirring was continued for 2 hours at 70° C. to complete the reaction.

Workup

  1. temperatureby heating the mixture
  2. dissolutiondissolution

Sources & evidence

ORD record
ord-4bc596754fb045b79b399a165cec29dc
Source dataset
uspto-grants-1990_06
Patent number
US04935172

Reaction notes

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